【摘要】 间酪氨酸（m-Tyr）是天然存在的一种非蛋白质类氨基酸，具有显著的除草活性。本文通过土壤喷雾试验系统探究m-Tyr对3种重要农作物（玉米Zea mays、大豆Glycine max、小麦Triticum aestivum）种子萌发与幼苗生长的化感作用，同时使用对m-Tyr抗性较强的作物玉米与马唐进行混合播种探索m-Tyr在实际应用中的除草价值。结果表明，供试植物对m-Tyr的抗性存在显著差异，其抗性排序为：玉米>大豆>小麦。与清水对照（CK）相比，30 mmol·L^-1 m-Tyr土壤喷雾处理混匀播种的玉米和马唐后，马唐和玉米的种子发芽率下降了89.43%、14.26%，幼苗生物量下降了89.14%、1.59%，证实其在玉米田应用中具有选择性除草潜力。本文探究m-Tyr对植物生长的化感作用表现及其剂量效应特征，为m-Tyr的生理功能研究及杂草防控的应用提供理论依据。更多还原

【Abstract】 M-tyrosine（m-Tyr）is a naturally occurring non-protein amino acid with significant herbicidal activity.In this paper,the conjugation effect of m-Tyr on seed germination and seedling growth of three important crops（corn Zea mays,soybean Glycine max,and wheat Triticum aestivum）was explored through the soil spray test system.Meanwhile,corn,a crop with strong resistance to m-Tyr,was used for mixed sowing with Digitaria sanguinalis,to explore the weeding value of m-Tyr in practical applications.The results showed that there were significant differences in the resistance of the tested plants to m-Tyr,and the resistance order was: corn>soybean>wheat.Compared with the clear water control（CK）,after 30 mmol·L^-1 m-Tyr soil spray treatment of well-mixed and sown corn and Digitaria sanguinalis,the seed germination rates of Digitaria sanguinalis,and corn decreased by 89.43% and 14.26% respectively,and the seedling biomass decreased by 89.14% and 1.59% respectively,confirming its potential for selective weed control in cornfield applications.This study clarified the allelic effect phenotype and dose-effect characteristics of m-Tyr on plant growth,providing a theoretical basis for the research on the physiological functions of m-Tyr and its application in weed control.更多还原